* NE PACIFIC TC GENESIS INDEX * * GFS VERSION * * EP992019 07/26/19 18 UTC * TIME (hr) 0 6 12 18 24 36 48 60 72 84 96 108 120 Prob of Genesis 33% 45% LAT (deg N) 11.6 11.4 11.4 11.3 11.4 11.4 11.6 12.0 12.2 12.3 12.1 11.8 11.8 LON (deg W) 115.8 117.2 118.6 119.9 121.1 123.4 125.5 127.2 128.5 129.4 130.1 130.6 131.5 DTL (km) 1400 1487 1572 1660 1744 1894 2018 2124 2207 2277 2350 2414 2475 TRACK SOURCE TABM TABM TABM TABM TABM TABM TABM TABM TABM TABM TABM TABM TABM TCGI 0-48h Genesis Forecast: 33% is 0.8 times the sample mean ( 44%) TCGI 0-120h Genesis Forecast: 45% is 0.8 times the sample mean ( 56%) --------------------------------------------------------------------------------------------- INDIVIDUAL PREDICTOR CONTRIBUTIONS TO PROBABILITY OF GENESIS ******* 48-HR ****** ******* 120-HR ****** AVG TCGI CONT AVG TCGI CONT DIVERGENCE -2.0 -3.7 5.3% -2.0 -2.1 7.7% VORTICITY 1.6 0.5 5.2% 1.5 0.5 5.9% VERTICAL SHEAR 12.9 11.6 9.6% 14.9 12.9 20.0% RH 79.1 80.0 6.1% 74.8 75.0 4.6% GOES 42.9 46.2 6.0% 42.8 46.2 5.3% DVORAK 0.9 0.5 1.3% 0.9 0.5 1.0% --------------------------------------------------------------------------------------------- PREDICTOR DEFINITIONS (Averaged Over 500 km Radius) GENESIS CLIM = Climatological Prob (%) of Genesis (Source: NHC-TAFB Invest Database) DIVERGENCE = GFS 850 hPa Horizontal Divergence (x10-7 s-1) VORTICITY = GFS 850 hPa Vorticity (x10-6 s-1) VERTICAL SHEAR = GFS 200-850 hPa Vertical Shear (kt) RH = GFS 600-850 hPa Relative Humidity (%) GOES = GOES Water Vapor Pixels Colder than -40C (%) DVORAK = Dvorak T-number, source: TAFB Version 3.0, July 2018